>
>If f8, is really f7.7, this makes quite a difference to me. I have a
>nice Sekonic light meter, which returns its readings in whole f stops
>plus a decimal increment. For instance, it might display 1/125 and
>f8.7. If I'm using slide film, which has such a small margin of error
>anyway, I would like to know that, in this instance I can safely set
>the lens to f8 (since it is actually f7.7) rather than round up to
>f11. In this case, rounding up to f11 might have produced
>underexposure outside the slide film latitude.
But remember, you eye is hard up picking a difference of 1/3 stop or less.
So it's not THAT critical.
Foxy
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